Table 3. ‘In vivo’ fertility parameters of boar sperm ejaculates subjected to a previous photo-stimulation procedure.

Treatment	N	Farrowing rate (%)	Total piglets at parturition	Live-born piglets at parturition
Control	800	83.7	13.5 ± 0.2	12.7 ± 0.2
Photo-stimulated	520	88.1*	14.9 ± 0.3*	14.0 ± 0.2*

Sows were inseminated with AI doses subjected to a previous photo-stimulation procedure as described in the Methods section. Afterwards, main ‘in vivo’ fertility parameters were recorded as described in the Methods section. Asterisks indicate significant (P < 0.05) differences when compared with the Control group. Prolificacy data are given as mean ± SEM.